package com.huping.interceptor;

import com.alibaba.fastjson.JSONObject;
import com.google.gson.JsonObject;
import com.huping.pojo.Result;
import com.huping.utils.JwtUtils;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import java.util.Date;

@Slf4j
@Component
public class LoginCheckInterceptor implements HandlerInterceptor {
    @Override //目标资源方法运行前运行
    public boolean preHandle(   HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("prehandle...");
        String url=request.getRequestURI().toString();
        log.info("请求的url:{}",url);

        String jwt = request.getHeader("token");
        if(!StringUtils.hasLength(jwt)){
            log.info("请求头token为空，返回未登录信息");
            Result error = Result.error("NOT_LOGIN");
            String notLogin = JSONObject.toJSONString(error);
            response.getWriter().write(notLogin);
            return false;
        }

        try {
            JwtUtils.parseJWT(jwt);
        } catch (Exception e){
            e.printStackTrace();
            log.info("解析令牌失败，返回未登录错误信息");
            Result error = Result.error("NOT_LOGIN");
            String notLogin = JSONObject.toJSONString(error);
            response.getWriter().write(notLogin);
            return false;
        }
        log.info("令牌合法，放行");
        return true;
    }

    @Override //目标资源方法运行后运行
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("postHandle...");
    }

    @Override //视图渲染完毕后运行
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("afterCompletion...");
    }
}
